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568035b7 | 1 | /* Copyright (C) 2002-2013 Free Software Foundation, Inc. |
76d81302 AJ |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
76d81302 AJ |
17 | |
18 | #ifndef _SYS_SEM_H | |
19 | # error "Never include <bits/sem.h> directly; use <sys/sem.h> instead." | |
20 | #endif | |
21 | ||
22 | #include <sys/types.h> | |
23 | ||
24 | /* Flags for `semop'. */ | |
25 | #define SEM_UNDO 0x1000 /* undo the operation on exit */ | |
26 | ||
27 | /* Commands for `semctl'. */ | |
28 | #define GETPID 11 /* get sempid */ | |
29 | #define GETVAL 12 /* get semval */ | |
30 | #define GETALL 13 /* get all semval's */ | |
31 | #define GETNCNT 14 /* get semncnt */ | |
32 | #define GETZCNT 15 /* get semzcnt */ | |
33 | #define SETVAL 16 /* set semval */ | |
34 | #define SETALL 17 /* set all semval's */ | |
35 | ||
36 | ||
37 | /* Data structure describing a set of semaphores. */ | |
38 | struct semid_ds | |
39 | { | |
40 | struct ipc_perm sem_perm; /* operation permission struct */ | |
41 | __time_t sem_otime; /* last semop() time */ | |
d1d9eaf4 | 42 | __syscall_ulong_t __glibc_reserved1; |
76d81302 | 43 | __time_t sem_ctime; /* last time changed by semctl() */ |
d1d9eaf4 | 44 | __syscall_ulong_t __glibc_reserved2; |
a26b6856 | 45 | __syscall_ulong_t sem_nsems; /* number of semaphores in set */ |
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46 | __syscall_ulong_t __glibc_reserved3; |
47 | __syscall_ulong_t __glibc_reserved4; | |
76d81302 AJ |
48 | }; |
49 | ||
50 | /* The user should define a union like the following to use it for arguments | |
51 | for `semctl'. | |
52 | ||
53 | union semun | |
54 | { | |
55 | int val; <= value for SETVAL | |
56 | struct semid_ds *buf; <= buffer for IPC_STAT & IPC_SET | |
57 | unsigned short int *array; <= array for GETALL & SETALL | |
58 | struct seminfo *__buf; <= buffer for IPC_INFO | |
59 | }; | |
60 | ||
61 | Previous versions of this file used to define this union but this is | |
62 | incorrect. One can test the macro _SEM_SEMUN_UNDEFINED to see whether | |
63 | one must define the union or not. */ | |
64 | #define _SEM_SEMUN_UNDEFINED 1 | |
65 | ||
66 | #ifdef __USE_MISC | |
67 | ||
68 | /* ipcs ctl cmds */ | |
69 | # define SEM_STAT 18 | |
70 | # define SEM_INFO 19 | |
71 | ||
72 | struct seminfo | |
73 | { | |
74 | int semmap; | |
75 | int semmni; | |
76 | int semmns; | |
77 | int semmnu; | |
78 | int semmsl; | |
79 | int semopm; | |
80 | int semume; | |
81 | int semusz; | |
82 | int semvmx; | |
83 | int semaem; | |
84 | }; | |
85 | ||
86 | #endif /* __USE_MISC */ |